Click here for brief specification of each category in S7-300 CPU spectrum:

• Standard CPUs
• Failsafe CPUs
• Compact CPUs
• Technology CPU
  

Compact CPUs

Compact CPUs         CPU 312C CPU 313C CPU 313C-2 PtP CPU 313C-2 DP Main memory/instruc. 16 Kbyte/4 K 32 Kbyte/10 K 32 Kbyte/10 K 32 Kbyte/10 K Load memory Load memory 64 Kbyte to 4 Mbyte through MMC 64 Kbyte to 8 Mbyte through MMC Backup all blocks through MMC Processing times Bit operations Word operations/fixed p. a./floating-point arithmetic 0.2µs 0.4/5/6µs 0.1µs 0.2/2/6µs Bit memories/timers/counters Bit memories S7 timers/counters IEC timer/counters 128 byte 128/128 yes 256 byte 256/256 yes Number of blocks Number of loadable blocks Ranger of numbers 1024 512 FC, 512 FB, 511 DB Program processing free cycle (OB 1), real-time controlled (OB 10), delay alarm (OB 20), time-triggered (OB 35), interrupt-triggered (OB 40), restart (OB 100, 102), asynchronous error (OB 80, 82, 85, 87), synchronous error (OB 121, 122), station failure/restoration (OB 86, only with CPU 313C-2 DP) Address ranges I/O address area I/O process image Digital channels (central) Analog channels (central) 1024/1024 byte 128/128 byte 266 64 1024/1024 byte 128/128 byte 1016 253 1024/1024 byte 128/128 byte 1008 248 1024/1024 byte 128/128 byte 1008 248 Expansions Racks Modules per rack 1 8 max. 4 8 DP interfaces Number of DP master systems int./CP 342-5 Equidistant Activation/deactivation of slaves Transmission speed No. of DP slaves per station Lateral communication – – – – – – 1/1 yes yes 12 MBit/s 32 yes Integrated functions Counter Pulse outputs Frequency measurement Controlled positioning Integ. FBs "loop control" 2 incremental encoders 24 V/10 kHz 2 channel pulse-width modulation max. 2.5 kHz 2 channels max. 10 kHz – – 3 incremental encoders 24 V/30 kHz 3 channel pulse-width modulation max. 2.5 kHz 3 channels max. 30 kHz – PID controller Integrated I/O Digital inputs Digital outputs Analog inputs Analog outputs 10; 24 V DC; all channels can be used for process alarms 6; 24 V DC, 0.5 A – – 24; 24 V DC; all channels can be used for process alarms 16; 24 V DC, 0.5 A 4: ± 10 V, 0..10 V, ± 20 mA, 0/4..20 mA; 1: 0..600 , PT100 2: ± 10 V, 0..10 V, ± 20 mA, 0/4..20 mA 16; 24 V DC; all channels can be used for process alarms 16; 24 V DC, 0.5 A – – PtP interface Physics Protocol driver – – RS485/422 3964 (R), ASCII – – Dimensions (mm) 80 x 125 x 130 120 x 125 x 130 Req. front connector 1 x 40 pin 2 x 40 pin 1 x 40 pin 1 x 40 pin Order No. group 6ES7312-5BD.. 6ES7313-5BE.., 6ES7313-6BE.. 6ES7313-6CE..